Percussive firing mechanism.



A. T. DAWSON & G. T. BECKHAM.

PERCUSSIVE PIRING MBGHANISM.

APPLICATION FILED APE. 6, 1914.

1,105,627. Patented Aug. 4, 19M

2 SHEETS-SHEET lr THE NORRIS PETERS CO. PHOTO-LITHU. WASHINGTON. D. L`.

A. T. DAWSON & G. T. BUCKHAM.

PERCUSSIVE FIRING MEGHANISM.

APPLICATION FILED APR. 6, 1914.

Patented Aug. 4, 1914.

2 SHEETS-SHEET 2.

NlTED STATES PATE OFEDE.

ARTHUR TREVOR DAWSON AND GEORGE THOMAS BUCKHAM, OF WESTMINSTER,

LAND.

PERCUSSIVE FIRIN G- IECHANISlVI.

Original application filed October 1S, 1913, Serial Nc.

Specoation of Letters Patent.

Patented Aug. li, 1914.

795,854. Divided and this application filed April 6,

Serial No. 829,829.

To all whom it may concern Be it known that we, ARTHUR TREvoR DAWSON, knight, and GEORGE THOMAS BUCK- HAM, both subjects of the King of Great Britain, residing at Vickers House, Broadway, Wvestminster, in the county of London, England, have invented certain new and useful Improvements in Percussive Firing Mechanism, of which the following is a specification.

This invention relates to percussive firing mechanism for breech loading guns, of the kind in which the striker is released by a trigger or firing handle mounted on the gun carriage. t

The chief object of the present invention is to provide improved means whereby the trigger or firing handle can be mounted on a part of the carriage which is not co-aXial with the gun trunnions, and the Operative relationship between the said trigger or handle and the striker can be maintained notwithstanding the movements of the gun in elevation or depression.

In Order that the said invention may be clearly understood and readily carried into effect, we will describe the same more fully with reference to the accompanying drawings, in which Figures 1 and 2 are respectively a side elevation and a sectional plan showing a constructional form of the invention.

A is the gun, B the gun cradle, B one of the trunnions and C theV gun carriage.

D represents the aforesaid device which pivoted at CZ to the cradle.

D is the trigger or firing handle and D2 the firing shaft.

E is the elevating' hand wheel or lever.

In the example shown, the aforesaid device D is in the form of a curved plate the pivot CZ of which is arranged parallel tothe trunnions and in front thereof when the gun is horizontal.

The firing trigger D is carried on the handle of the elevating hand wheel or lever vE which is mounted on the gun carriage. The said trigger operates through the known arrangement of a sliding pin cl3, a

lever cl3* and another sliding arm 4X on a vertical shaft the carriage. This shaft has another arm d5* carrying a roller ZX for engaging with the curved plate D. The curved plate D is connected by means of the firing shaft D2 to an arm D3 which carries a bevel pinion D3x meshing with a similar pinion forming part of or connected to a sleeve D. rlhis sleeve is mounted on the cradle and carries a plunger D5 which is adapted to engage with a sleeve D5X carried by the gun, in a similar manner to that described in the prior British specification No. 16216 of 1911.

lVhat we claim and desire to secure by Letters Patent of the United States is l. In percussive firing mechanism for ordnance, the combination with a non-elevating part of the mounting and the gun cradle, of an elevating device on said non-elevating part, a firing trigger On said elevating device, a curved member moved by said trigger, a pivot for connecting said member to the cradle, a rotary member on the cradle, means for connecting said rotary member to the curved member and a rotary firing member on the gun with which firing member the rotary member on the cradle engages.

2. In percussive firing mechanism for ordnance, the combination with a non-elevating part of the mounting and the gun cradle, of an elevating device on said non-elevating part, a firing' trigger on said elevating device, a curved member moved by said trigger, a pivot for connecting said member to the cradle, a rotary member on the cradle, a rod and gearing for connecting said rotary member to the curved member and a rotary firing member on the gun with which firing member the rotary member on the cradle engages.

In testimony whereof we afIiX our signatures in presence of two witnesses.

ARTHUR TREVOR DAVSON. GEORGE THOMAS BUCKHAM.

Vitnesses:

HENRY KING.` JNO. R. CASWELL.

pin Z4 upon an Z5 mounted on Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

